Invar36 Feni36 Alloy Strip Mig Weld Wire

Manufacture Invar 36 Feni Alloy 4J36 Welding Tig Wire
(Common Name: Invar, FeNi36, Invar Standard, Vacodil36)
4J36 (Invar), also known generically as FeNi36 (64FeNi in the US), is a nickel-iron alloy notable for its uniquely low coefficient of thermal expansion (CTE or α).
4J36 (Invar) is used where high dimensional stability is required, such as precision instruments, clocks, seismic creep gauges, television shadow-mask frames, valves in motors, and antimagnetic watches. In land surveying, when first-order (high-precision) elevation leveling is to be performed, the Level staff (leveling rod) used is made of Invar, instead of wood, fiberglass, or other metals. Invar struts were used in some pistons to limit their thermal expansion inside their cylinders.
4J36 use oxyacetylene welding, electric arc welding, welding and other welding methods. Since the coefficient of expansion and chemical composition of the alloy is related should be avoided due to welding causes a change in the alloy composition, it is preferable to use Argon arc welding welding filler metals preferably contains 0.5% to 1.5% titanium, in order to reduce weld porosity and crack. TypeFeatureUsage4J32,4J36Low coefficiency of thermal expension under 20~100°CKinds of instrument needs stable sizes;Parts of instrument;Resonance chase.4J38Low coefficiency of thermal expension under 20~100°CEasy to be cutKinds of instrument needs stable sizes;Parts of instrument;Resonance chase.4J40Low coefficiency of thermal expension under 20~100°CResonance chase of klystrin, microwave tube in electrical vacuum industry.4J06,4J47,4J49Simlar coefficiency of thermal expension as soft glass’under certain temperature rangeMatch with soft glass in electrical vacuum industry.4J42,4J45,4J50Some coefficiency of thermal expension under certain temperature rangeMatch with soft glass and ceramic in electrical vacuum industry.4J29Simlar coefficiency of thermal expension as hard glass’under certain temperature rangeMatch with hard glass in electrical vacuum industry.4J44Some coefficiency of thermal expension under 20~500°CMatch with hard glass in electrical vacuum industry.4J28coefficiency of thermal expension under certain temperature range
corrision-resistingMatch with soft glass in electrical vacuum industry.4J43Some coefficiency of thermal expension under 20~400°C
dumet wire chip4J33,4J34Simlar coefficiency of thermal expension as 95%AI2O3 ceramic’under -60~+600°CMatch with 95%AI2O3 ceramic in electrical vacuum industry.4J58Some coefficiency of thermal expension under 20~50°CHigh-precision Line Scale4J78,4J80,4J82Medium coefficiency of thermal expension under 0~600°C ;No megnetic, corrision-resisting; high strength and tenacity.Gyro and other ceramic
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